How to use php echo to display user input multiple times [closed] - php

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I need someone to help me with php guides on how i can echo every user input to the screen...
Example:
Html
<form action"bot.php" method="POST">
<input type="text" name="name">
<input type="submit" name="submit" value="submit">
</form>
Php Code
<?php
//request name from form
$username = $_REQUEST['username'];
//create function
function msg()
{
$username = $_POST['username'];
echo "$username";
echo "\r\n";
}
//echo input to screen
if (isset($_POST['submit']))
{
msg();
}
If I click submit button it will display my input text to the screen, that's fine, If I input another username click on submit button again to display under my previous output to screen...Instead PHP overide my previous output with new username submitted..
Will be glad if anyone can help

Answer 1

This example uses a session. You don't need anything external other than a working PHP installation. I've added comments in the code, but the basic flow is,
start a session
read the names from the session. If this is a new session, default the names to an empty array
read the submitted name
append the submitted name to the existing names
write the existing names to the session
<form action="bot.php" method="POST">
<input type="text" name="name">
<input type="submit" name="submit" value="submit">
</form>
<?php
// Always start the session
session_start();
// Check if the form was submitted
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
// Read the existing names from the session. Default to an empty array if none are set
$existingNames = $_SESSION['names'] ?? [];
// Grab the submitted name
$name = $_POST['name'];
// Add it to the end of the list
$existingNames[] = $name;
// Overwrite the entire session's list
$_SESSION['names'] = $existingNames;
// Output something interesting
echo 'Welcome ' . $name;
echo '<br>';
echo 'There are ' . count($existingNames) . 'name(s).';
echo '<br>';
foreach ($existingNames as $storedName) {
echo $storedName;
echo '<br>';
}
}